package api;

import java.util.ArrayList;
import java.util.Collection;


/**
 * Created with IntelliJ IDEA.
 * ClassName: Demo1
 * Package: api
 * Description:
 * User: fzykd
 *
 * @Author: LQH
 * Date: 2023-10-09
 * Time: 22:11
 */

public class Demo1 {
    public static void main(String[] args) {
        Collection collection = new ArrayList();
        //增删改查
        collection.add("a");
        collection.remove("a");

    }
}
